WO1981002236A1 - Procede de fabrication de disques - Google Patents

Procede de fabrication de disques Download PDF

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Publication number
WO1981002236A1
WO1981002236A1 PCT/US1980/001728 US8001728W WO8102236A1 WO 1981002236 A1 WO1981002236 A1 WO 1981002236A1 US 8001728 W US8001728 W US 8001728W WO 8102236 A1 WO8102236 A1 WO 8102236A1
Authority
WO
WIPO (PCT)
Prior art keywords
group
photopolymerizable liquid
flexible layer
bead
formula
Prior art date
Application number
PCT/US1980/001728
Other languages
English (en)
Inventor
D Kerfeld
Original Assignee
Minnesota Mining & Mfg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Priority to DE8181900699T priority Critical patent/DE3071280D1/de
Priority to AU67830/81A priority patent/AU536709B2/en
Publication of WO1981002236A1 publication Critical patent/WO1981002236A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/78—Moulding material on one side only of the preformed part
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/16—Coating processes; Apparatus therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/68—Record carriers
    • G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
    • G11B3/705—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers characterised by the selection of the material only
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B29C2043/023—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having a plurality of grooves
    • B29C2043/025—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having a plurality of grooves forming a microstructure, i.e. fine patterning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3483—Feeding the material to the mould or the compression means using band or film carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3488—Feeding the material to the mould or the compression means uniformly distributed into the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B29C43/06—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds continuously movable in one direction, e.g. mounted on chains, belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0002—Condition, form or state of moulded material or of the material to be shaped monomers or prepolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs
    • B29L2017/005—CD''s, DVD''s

Definitions

  • the present invention relates to information carrying systems and more particularly to discs which carry light readable or stylus readable information.
  • discs may be useful in carrying information which is convertible to electronic signals for such varied uses as sound recordings, audio/visual recordings, or even computer type information retrieval.
  • the present invention relates to information storage discs for use with laser or stylus readout systems which have good fidelity and resistance to wear.
  • the present invention relates to a process for forming information storage discs or disc blanks for use with laser or stylus readout systems.
  • high density information storage discs or disc blanks comprising discs having a circular, arc-like, or spiral pattern of depressions, protuberances, and/or grooves with or without (in the case of blanks) modulations, can be made by photopolymerization of a liquid mass properly deposited between a stamper and a substrate to which the polymerized mass is to adhere.
  • the photopolymerizable mass is deposited by moving a bead or wave of the photopolymerizable liquid between a flexible substrate or flexible stamper and the corresponding optical disc stamper or substrate so as to fill the pattern in the stamper and then irradiating the photopolymerizable mass, through either the stamper or the substrate.
  • the process of the present invention generally comprises the use of at least one flexible sheet, either the substrate, which would carry the information layer, or the stamper, (which may be a video disc or video disc blank stamper) to spread a bead of photopolymerizable liquid over a surface (corresponding to a video disc stamper or substrate) and the polymerization of the liquid by exposure to radiation through the substrate or disc stamper.
  • the stamper which may be a video disc or video disc blank stamper
  • the use of liquid photopolymerizable materials to form replicated information carrying discs is known in the art, such as for example Belgian Patent 859,711.
  • the process of the present invention provides a number of advantages over prior art methods, including those using photopolymerizable liquids.
  • the prior art processes involving the deposition of the liquid on the stamper or substrate (by knife coating or spin coating) and subsequent application of the substrate, are two step processes.
  • the substrate is usually laid over the liquid coated master and the amounts of liquid material and its general displacement over the master is difficult to control. Excess liquid is usually applied to insure minimum thickness in the information carrying layer.
  • the advancement of a bead of liquid accordinging to the present invention as by the substrate being rolled out over the master has been found to remove substantially all of the air in the mold.
  • the leading edge of the bead tends to pick up and carry the air without redepositing it in progressive features of the master because the air bubbles rupture, releasing the gas. This eliminates beading and wicking of the thin liquid film both of which creates voids.
  • the need for levelling agents, which can deleteriously affect the physical properties of the coating or raise the cost of materials used is avoided.
  • the process of the present invention also offers advantages over the thermal molding or embossing processes of the prior art.
  • Photopolymerization can, with reasonable selection of photocatalysts or photoinitiators, be performed at faster rates and with simpler equipment with no loss of quality as compared to thermal molding and embossing processes. Little pressure is used and no heat curing is required, so little stress is applied to or built into the discs. Because little stress and softer materials are used, the life of the stamper is believed to also be extended.
  • a non-metallic master may be used to provide numerous replications. Such organic resin stampers (usually with a thin metal coating) are far less expensive than metal stampers used in conventional processes.
  • the substrate or master is able to bend sufficiently to enable the formation of a bead and propagation of that bead as the bend-point is moved forward, the substrate or master is sufficiently flexible. Materials that would otherwise be considered semi-flexible are therefore useful in the practice of the present invention.
  • FIGURE 1 shows a cross-section view of an information carrying disc.
  • FIGURE 2 shows a view of apparatus which could typically be used to practice the present invention.
  • FIGURE 3 shows a side view of apparatus which could typically be used to practice the present invention.
  • a cross-section of an information carrying disc 2 is shown in Figure 1.
  • a substrate 4 carries an information carrying layer 6 which has depressions or grooves 7 or protuberances 5 thereon.
  • substrate 4 may be opaque or transparent. If the substrate is opaque to the radiation used for curing the photopolymerizable liquid, a stamper substantially transparent to this radiation must be used.
  • a reflective layer or primer layer or both may be present between the substrate 4 and the information carrying layer 6.
  • the process itself can be more readily understood from Figure 2.
  • the substrate 4 is moved by an element 12 over the stamper carrying surface 10.
  • On this surface, facing upwards towards the advancing substrate 4 is a negative mold 8 of the information carrying disc or disc blank to be replicated.
  • the pattern 9 on the mold 8 is the specific pattern to be duplicated.
  • element 12 advances substrate 4 so that it flattens out over the surface 10
  • a mass of photopolymerizable liquid 14 is also advanced over the surface 10 and the pattern 9 on the mold 8. If the stamper is both transparent and flexible, the relative positions of the substrate and stamper may be reversed.
  • Another manner of propagating the advancing bead of liquid within the practice of the present invention is with an essentially flat or rigid layer.
  • the rigid layer By placing the mass of liquid on one side of an upright or angled rigid substrate or master, the rigid layer may be rotated about the lower edge so as to squeeze a bead of liquid forward until the rigid layer and the other substrate enclosing the liquid are essentially parallel. This operates substantially better than would simple hand spreading of liquid and pressing with a stamper because of reduced air entrapment.
  • This method can be described as 1) moving a first layer relative to a second layer from a non-paralle to a parallel position so as to spread in the form of a bead, a photopolymerizable liquid mass between the two layers, one of said layers having a patterned surface facing the other layer with a circular, arc-like, or spiral pattern of depressions, protubernances, grooves with or without modulations or combinations of depressions, protubernances and grooves with or without modulations, the other of said layers having a surface to which the photopolymerizable liquid will bond upon polymerizing, 2) then irradiating said photopolymerizable liquid to polymerize said liquid and bond the polymer formed to the other of said layers, and then 3) removing said polymeric resin and the layer to which it is bonded from said patterned surface.
  • the composition of the photopolymerizable material may be any material which polymerizes into a polymeric resin which has satisfactory properties for use in an information carrying disc or disc blank.
  • the polymeric resin usually is at least transparent for the radiation used to read information off the disc. Ordinarily a fairly narrow band of radiation is used for these purposes so that the photopolymerizable liquid and the polymeric resin only preferably should be transmissive of at least 50% of the radiation in a 100 nm, 50 nm, or 30 nm band.
  • the layer is transmissive of at least 75 to 90% of the radiation within such a band.
  • Many different types of photopolymerizable systems are useful.
  • Acrylates including methacrylates
  • epoxy resins silanes, vinyl resins, and others are useful photopolymerizable systems.
  • the preferred polymerizable systems of the present invention are ambifunctional silanes and polyacryloyl polymerizable systems.
  • Ambifunctional silanes are materials (monomers and/or hydrolyzates and precondensates thereof) having a di- or trialkoxy silane on one end and a different polymerizable group, such as an epoxy, acryloyl (including methacryloyl), or vinyl group on the other end.
  • a formula for these materials would be: wherein A is an epoxy, acryloyloxy, or vinyl containing group,
  • R is a divalent organic radical
  • R 1 is a monovalent organic radical such that OR 1 is hydrolyzable,.
  • R 2 is a monovalent organic radical, and n is 0 or 1, and most preferably 0.
  • A is preferably selected from the groups
  • CH 2 CH-, wherein a and b are selected from H, or, when fused together, represent the atoms necessary to form a 5- or 6-membered cycloaliphatic ring, and R 3 is H or CH 3 .
  • R is preferably an alkylene group which may be interrupted with an oxygen atom.
  • the group has from 1 to 16 total carbon atoms and more preferably may be represented by the formula
  • R 1 is preferably alkyl or acyl of 1 to 10 carbon atoms and most preferably alkyl of 1 to 3 carbon atoms.
  • R 2 may be H or alkyl of 1 to 10 carbon atoms. As noted above, these compounds are most preferably trialkoxy silanes.
  • polyacryloyl heterocyclics are represented by the formulae:
  • a 1 -Z-A 2 wherein A 1 and A 2 independently are alkoxyalkyl groups having terminal ethylenic unsaturation and having the formula
  • R 9 -O- is a monovalent residue of an aliphatic terminally unsaturated primary alcohol, R 9 OH, formed by the removal of the active hydrogen from the primary -OH group, R 9 having the formula:
  • c is an integer of from 1 to 6
  • d is zero or an integer of from 1 to 6
  • R 10 and R 14 are independently selected from hydrogen and methyl
  • R 13 is an aliphatic group having from 1 to 15 carbon atoms, and no more than two catenary oxygen or carboxy groups, a valence of m + 1, t is an integer of from 1 to 5,
  • R 11 is selected from hydrogen and groups of the formula
  • R 15 is selected from alkyl and alkenyl groups
  • R 16 is an aliphatic or aromatic group of up to eight carbon atoms
  • R 12 is an alkylene group of from 1 to 6 carbon atoms with up to one catenary oxygen atom
  • Z is a heterocyclic group of the formula
  • X is a divalent group which is required to complete a 5- or 6-membered heterocyclic ring, or
  • R 17 and R 18 independently represent hydrogen or methyl
  • R 19 represents hydrogen, an alkyl group, or a phenyl group
  • R 18 and R 19 together may represent a trimethylene or tetramethylene group, r represents a number of from 1 to 30, s is 2 or 3, and
  • A represents a group of the formula
  • X 1 represents the divalent radical necessary to complete a 5- or 6-membered heterocyclic ring group
  • the more preferred compounds of. this class are selected from those where m is 1 to 4 in formula 1) and in formulae 1) or 2) X 1 and X are selected from
  • R 4 , R 5 , R 6 and R 7 independently represent hydrogen, and alkyl group, an alkylene group, a cycloalkyl group, or a phenyl group, and
  • R 8 represents hydrogen, an aliphatic group, or an aromatic group, except, that with regard to X, R 8 is an alkyoxyalkyl group as defined for A 1 and A 2 . Most preferably X and X 1 are selected from
  • R 4 and R 5 are hydrogen or alkyl of 1 to 4 carbon atoms.
  • t is 2 to 5
  • R 9 is
  • R 13 is alkylene of 1 to 13 carbon atoms.
  • These compounds may be pure monomers, or, particularly in the case of the epoxy-silanes, hydrolyzates or precondensates.
  • copolymerizable materials may be combined therewith.
  • copolymers are preferably combined with the compounds. Either aliphatic or cycloaliphatic epoxy comonomers are useful in the epoxy-terminated silanes, as are other copolymerizable silanes.
  • Acrylates preferably diacryloyloxy and dimethacryloyloxy (as well as tri-, tetra-, and penta-functional acryloyloxy materials) are useful comonomers with both the acryloyloxy-terminated silanes and the polyfunctional acryloyloxy-substituted heterocyclics described above.
  • the use of the copolymerizable materials in conjunction with the preferred compounds of the invention is well described in the prior art, as for examples U.S. Patent No.s. 4,049,861, 4,101,513, 4,084,021 and U.S. Patent Application Serial Nos. 51,876, 51,877 and 51,888 filed on 25 June 1979.
  • Preferred cationic photoinitiators are the SbF 6 -, PF 6 ", BF 4 -, and AsF 6 " salt of polyaryl iodonium and sulfonium salts.
  • Preferred free radical photoinitiators are polyaryl iodonium and sulfonium salts and the phenones.
  • the compounds discussed above are generally preferred because they may be used without solvents. The absence of solvents prevents trapping of the solvents in the coating during cure. The preferred compounds, as noted in the prior art described above, also produce highly abrasion resistant and solvent resistant articles which are particularly desirable.
  • the ambifunctional silanes and particularly the epoxy- and acryloyloxy-terminated silanes
  • highly abrasion resistant materials are produced when the ambifunctional silanes comprise at least 30% by weight of the reactive ingredients.
  • the heterocyclic acrylates at least 15% by weight and preferably 25% by weight of the composition should be the heterocyclic acryloyloxy materials for abrasion resistance and/or oxygen insensitivity.
  • additives such as antioxidants, lubricants, surfactants, flow control factants, flow control aids, fillers, dyes, etc. may be present in the composition of the present invention.
  • U.S. Patent No. 4,173,476 by shaking for 3 hours. Bubbles were then removed from the mixture by placing it in an evacuated chamber for 15 minutes. The resulting photopolymerizable material was used to make a video disc replica according to the following roll coating process.
  • a nickel video disc stamper was utilized. Approximately 2.0 cm 3 of the material prepared as described above is spread by a cylindrical coating roller between a video disc stamper and a primed 0.18 mm polyester film. The sheet of 0.18 mm thick polyester film was positioned between the stamper and the roller to serve as a base element. This rolling process spread out a bubble free coating of resin composition over the surface of the stamper and simultaneously covered it with the polyester sheet.
  • the stamper covered in this manner was then passed at 3 cm/sec under a 200 watt/inch high intensity medium pressure Hg vapor lamp.
  • the UV exposure cured and hardened the resin composition.
  • the laminated structure containing the replicated information was easily peeled from the nickel stamper.
  • the sheet was then cut to produce a circular center hole and a circular outside edge, both concentric with the replicated information grooves.
  • the resulting video disc replica had an information bearing layer which was approximately 10 ⁇ 5 ⁇ m thick which did not curl when laid on a flat surface. It retained this flatness after more than one year under ambient conditions and produced a good television picture when played on a commercial video disc player.
  • Example 2 A resin composition was prepared by mixing 60 gm of 1,3-bis 3-[2,2,2-(triacryloyloxymethyl)ethoxy] 2-hydroxypro ⁇ yl -5 ,5-dimethyl-2,4-imidizolidinedione (containing approximately 25% pentaerythritol tetraacrylate), referred to as Compound A in the remaining examples, with 40 gm 1,6-hexanediol diacrylate and 2 gm 2,2-dimethoxy-2phenyl-acetophenone. This composition was mixed by shaking and then filtered through a 5 ⁇ m filter. The resulting photopolymerizable material was used to make a video disc replica according to the roll coating process of Example 1 using polyvinylidenechloride primed polyester as the substrate.
  • the resulting video disc replica had an information bearing layer 10 ⁇ 5 ⁇ m thick. This disc lay flat when placed on a level surface. It provided. a good television picture when played on a video disc player.
  • Example 3 A resin composition was prepared by mixing 70 gm of Compound A with 30 gm of hexanediol diacrylate and 2 gm of the photoinitiator of Example 1. The resulting material was used to make a video disc according to the procedure of Example 1. The video disc replica made in this way had a cured information bearing layer 6 ⁇ 2 ⁇ m thick. This disc lay flat when placed on a level surface. It provided a good television picture when played on a video disc player.
  • Example 4 A resin composition was prepared by mixing 30 gm of Compound A with 70 gm of hexanediol diacrylate and 2 gm of the photoinitiator of Example 1. The resulting material was used to make a video disc according to the procedure of Example 1. The video disc replica made in this way had a cured information bearing layer 5 ⁇ 2.5 ⁇ m thick. This disc lay flat when placed on a level surface. It provided a good television picture when played on a video disc player.
  • Example 5 A sample of commercially available poly vinylchloride film 14 inches square was prepared for use as a video disc substrate in the following way. The sheet was placed between two flat, smooth, chrome-steel plates. The plates were in turn sandwiched between four layers of cardboard and the resulting stack pressed for ten minutes in a hydraulic press. The press was operated with a force of 11 metric tons, and the press platens were heated to 160°C. This pressing operation reduced the surface roughness of the manufactured film and provided a substrate of suitable flatness.
  • the substrate thus prepared was used to make a video disc replica according to the procedure of Example 2, except that the surface of the polyvinylchloride opposite the information bearing layer was also coated with the resin composition.
  • the cured polymer showed good adhesion to the otherwise untreated surface of the polyvinylchloride substrate.
  • the disc lay flat when placed on a level surface and provided a good television picture when played on a video disc player. Information could be read from this disc with the laser beam incident from either side of the disc.
  • a sheet of cast acrylic material (polymethylmethacrylate) 1000 m thick was sputter etched according to the following procedure to promote adhesion of the polymer.
  • the acrylic substrate was placed in a Vecco Model 776 radio frequency diode sputtering apparatus operating at a frequency of 13.56 MHz.
  • the substrate was then subjected to a radio frequency sputter etch as described in assignee's copending application S.N. 80,530 (filed 10 October 1974).
  • the resin composition of Example 2 and the roll coating technique of Example 2 was used to prepare a vide disc replica with the above described substrate.
  • the semiflexible substrate was allowed to bend slightly when it was lowered slowly onto the stamper as the roller moved along.
  • the resin composition was cured with a bank of low intensity UV lamps, and the replica removed from the stamper.
  • An aluminum coating 30 nm thick was vapor coated onto the surface of the information bearing layer.
  • a circular hole was cut in the center of the disc, and a circular outer edge was cut.
  • the resulting disc was then played on a video disc player; a good television picture was obtained.
  • the laser beam of the player was incident through the uncoated acrylic surface and reflected by the aluminum coating on the information bearing surface.
  • a resin composition was made by mixing 70 gm of a precondensate of ⁇ -methacryloxypropyltrimethoxy silane (made according to U.S. Patent Application Serial No. 911,892, filed 2 June, 1978) with 30 gm of hexanedioldiacrylate and 2 gm of 2,2-dimethoxy-2-phenylacetophenone.
  • the resulting material was used to make a video disc according to the procedure of Example 1 except that the resin was cured under a bank of low intensity "black lights" for 15 minutes.
  • the video disc replica made in this way had a cured information bearing layer 6 ⁇ 3.5 ⁇ m thick. This disc lay flat when placed on a level surface. It provided a good television picture when played on a video disc player.
  • Example 8 A resin composition was made by mixing 90 gm ⁇ -glycidoxypropyltrimethoxy silane with 10 gm limonene oxide and 2 gm of the photocatalyst of Example 1. The resulting material was used to make a video disc according to the procedure of Example 1 except that the resin was cured under a bank of low intensity "black lights" for 30 minutes. The video disc replica made in this way had a cured information bearing layer 5 i 3 ⁇ m thick. This disc lay flat when placed on a level surface. It provided a television picture when played on a video disc player but gave a slightly low signal level.
  • Example 9 A video recording was made in a commercially available polymeric photoresist layer and the layer developed by standard wash-development techniques after exposure. The recording was then vapor coated with 10 m of chrome. The resulting photoresist stamper was used in place of a nickel stamper to make a video disc replica according to the procedures of example 1. This replica was playable. When vapor coated with lOnm of chrome and used in place of a nickel stamper, repeated playable replications were made.
  • Example 10 A photoresist stamper was made according to the procedure of example 9. This stamper was used in place of a nickel stamper to produce a video disc replica according to the procedure of example 2. This replica provided a good television picture when played on a video disc player and again there was no significant wear on the stamper.
  • Example 11 An audio record replica was prepared using commercially available 1 mm polyvinylchloride as the base element.
  • the resin composition of Example 1 was used with the roll-coating technique of Example 1.
  • the semiflexible base element was allowed to bend slightly as it was lowered slowly onto the audio record stamper as the roller moved along.
  • the resin composition was cured with a bank of low intensity UV lamps, and the replica stripped from the stamper. A circular hole was cut in the center of the record and a circular outer edge was cut.
  • the resulting replica had an information bearing layer approximately 50 m thick.
  • the audio record replica was successfully played on a conventional stereo audio system

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Abstract

La fabrication de disques (2) porteurs d'information a requis des etapes de traitement relativement lentes a cause de la necessite de conformer les materiaux a des formes exactes de moules et d'evacuer les gaz emprisonnes. L'utilisation de films preformes ou de liquides permet d'apporter des solutions differentes a ce probleme. On a remarque que l'utilisation d'un procede dans lequel une goutte de liquide photopolymerisable (14) est deplacee au travers de la surface du moule permet de remplir le moule avec precision, d'enlever les bulles d'air, et rend possible une reproduction rapide du disque porteur d'informations.
PCT/US1980/001728 1980-02-01 1980-12-23 Procede de fabrication de disques WO1981002236A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8181900699T DE3071280D1 (en) 1980-02-01 1980-12-23 Process for making video and similar discs
AU67830/81A AU536709B2 (en) 1980-02-01 1980-12-23 Process for making discs

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/117,467 US4374077A (en) 1980-02-01 1980-02-01 Process for making information carrying discs
US117467 1980-02-01

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WO1981002236A1 true WO1981002236A1 (fr) 1981-08-06

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US (1) US4374077A (fr)
EP (1) EP0044345B1 (fr)
JP (1) JPS57500017A (fr)
CA (1) CA1152941A (fr)
DE (1) DE3071280D1 (fr)
WO (1) WO1981002236A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4569806A (en) * 1983-02-04 1986-02-11 U.S. Philips Corporation Method and device for manufacturing an information carrier of a synthetic material having a laminated structure
US4707431A (en) * 1984-11-01 1987-11-17 Ricoh Co., Ltd. Optical information recording medium
EP0303086A2 (fr) * 1987-08-11 1989-02-15 Hoechst Aktiengesellschaft Procédé pour fabriquer un substrat pour une couche d'enregistrement magnéto-optique, dispositif d'injection pour fabriquer un substrat ainsi que substrat pour une couche d'enregistrement magnéto-optique
EP0409663A2 (fr) * 1989-07-21 1991-01-23 Japan Synthetic Rubber Co., Ltd. Disque optique, méthode de fabrication pour celui-ci et méthode de reproduction
US5149607A (en) * 1985-11-25 1992-09-22 U.S. Philips Corporation Matrix
WO1994014586A1 (fr) * 1992-12-23 1994-07-07 Honeywell Inc. Reproduction de surfaces optiquement plates
WO1997005608A1 (fr) * 1995-07-27 1997-02-13 Minnesota Mining And Manufacturing Company Procede et appareil permettant la realisation d'un enregistrement optique de l'information
WO1999052104A1 (fr) * 1998-04-06 1999-10-14 Imation Corp. Procede de production de matrices de disques de stockage de donnees multiples a partir d'un original

Families Citing this family (82)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4906315A (en) * 1983-06-20 1990-03-06 Mcgrew Stephen P Surface relief holograms and holographic hot-stamping foils, and method of fabricating same
FR2553531B1 (fr) * 1983-10-14 1995-12-29 Canon Kk Monomere photopolymerisable pour milieu d'enregistrement optique et milieu le contenant
JPS6116815A (ja) * 1984-07-04 1986-01-24 Sumitomo Bakelite Co Ltd 光デイスク基板の製造方法
JPS60121442A (ja) * 1983-12-06 1985-06-28 Canon Inc 感光性記録メモリ−媒体および記録再生方法
US4614705A (en) * 1984-02-17 1986-09-30 Ricoh Co., Ltd. Optical information recording medium
US4790893A (en) * 1984-07-19 1988-12-13 Hallmark Cards, Inc. Replication of information carriers
US4968370A (en) * 1984-07-19 1990-11-06 Hallmark Cards, Incorporated Replication of information carriers
US4929402A (en) * 1984-08-08 1990-05-29 3D Systems, Inc. Method for production of three-dimensional objects by stereolithography
US4575330A (en) * 1984-08-08 1986-03-11 Uvp, Inc. Apparatus for production of three-dimensional objects by stereolithography
US5174943A (en) * 1984-08-08 1992-12-29 3D Systems, Inc. Method for production of three-dimensional objects by stereolithography
US5554336A (en) * 1984-08-08 1996-09-10 3D Systems, Inc. Method and apparatus for production of three-dimensional objects by stereolithography
US5236637A (en) * 1984-08-08 1993-08-17 3D Systems, Inc. Method of and apparatus for production of three dimensional objects by stereolithography
US5344298A (en) * 1984-08-08 1994-09-06 3D Systems, Inc. Apparatus for making three-dimensional objects by stereolithography
US4756856A (en) * 1984-12-20 1988-07-12 Polaroid Corporation Method of and apparatus for forming surface of magnetic media
US4632898A (en) * 1985-04-15 1986-12-30 Eastman Kodak Company Process for fabricating glass tooling
US4619804A (en) * 1985-04-15 1986-10-28 Eastman Kodak Company Fabricating optical record media
US4652498A (en) * 1985-10-22 1987-03-24 Minnesota Mining And Manufacturing Company Environmentally protected optical recording media
US4665006A (en) * 1985-12-09 1987-05-12 International Business Machines Corporation Positive resist system having high resistance to oxygen reactive ion etching
JPS62141661A (ja) * 1985-12-16 1987-06-25 Ricoh Co Ltd 光情報記録媒体
DE3701801A1 (de) * 1986-01-22 1987-07-23 Ricoh Kk Optisches informationsaufzeichnungsmaterial
US4963300A (en) * 1987-12-15 1990-10-16 Ciba-Geigy Corporation Process for the preparation of laminates
US5175030A (en) * 1989-02-10 1992-12-29 Minnesota Mining And Manufacturing Company Microstructure-bearing composite plastic articles and method of making
CA2020180C (fr) * 1989-06-30 2000-01-04 Stephen A. Zager Methode de fabrication de supports d'information a cuvettes a lecture optique
US5888335A (en) * 1989-10-26 1999-03-30 Minnesota Mining And Manufacturing Company Multiple releasable contact responsive fasteners
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US5406544A (en) * 1991-07-25 1995-04-11 Clark; Bryan K. Low cost substrate for bump-forming recording media
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US20040137734A1 (en) * 1995-11-15 2004-07-15 Princeton University Compositions and processes for nanoimprinting
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CN1161769C (zh) 1998-04-06 2004-08-11 伊美申公司 数据存储盘的反转光学母盘的制造
US6354827B1 (en) 1998-11-12 2002-03-12 Imation Corp. Stamper assembly for manufacturing optical data storage disks
US6939474B2 (en) * 1999-07-30 2005-09-06 Formfactor, Inc. Method for forming microelectronic spring structures on a substrate
US6517995B1 (en) * 1999-09-14 2003-02-11 Massachusetts Institute Of Technology Fabrication of finely featured devices by liquid embossing
US20040190102A1 (en) * 2000-08-18 2004-09-30 Mullen Patrick W. Differentially-cured materials and process for forming same
US7230764B2 (en) * 2000-08-18 2007-06-12 Reflexite Corporation Differentially-cured materials and process for forming same
DE60117573T2 (de) * 2000-08-18 2006-12-14 Reflexite Corp., Avon Verschiedenartig gehärtete materialen und verfahren zur deren herstellung
US6628598B2 (en) 2000-12-05 2003-09-30 Imation Corp. Patterned media system
US7368222B2 (en) * 2001-01-16 2008-05-06 Dphi Acquisitions, Inc. Optical data storage media with enhanced contrast
US6616867B2 (en) 2001-02-07 2003-09-09 Imation Corp. Multi-generation stampers
US6612917B2 (en) 2001-02-07 2003-09-02 3M Innovative Properties Company Abrasive article suitable for modifying a semiconductor wafer
US6632129B2 (en) * 2001-02-15 2003-10-14 3M Innovative Properties Company Fixed abrasive article for use in modifying a semiconductor wafer
US6858253B2 (en) * 2001-05-31 2005-02-22 3M Innovative Properties Company Method of making dimensionally stable composite article
US6638692B1 (en) 2001-07-16 2003-10-28 Imation Corp. Replicated regions on optical disks
US6821460B2 (en) * 2001-07-16 2004-11-23 Imation Corp. Two-sided replication of data storage media
US6936181B2 (en) * 2001-10-11 2005-08-30 Kovio, Inc. Methods for patterning using liquid embossing
TW531742B (en) * 2001-10-30 2003-05-11 Ritek Corp Manufacturing method for disk cover layer
US7008208B1 (en) 2002-01-17 2006-03-07 Imation Corp. Grounded molding tool for manufacture of optical components
US6977052B1 (en) 2002-01-18 2005-12-20 Imation Corp Check disk for optical data storage disk manufacturing
US6957608B1 (en) 2002-08-02 2005-10-25 Kovio, Inc. Contact print methods
US7329537B2 (en) * 2003-04-17 2008-02-12 Nexcelom Bioscience, Llc Micro-pattern embedded plastic optical film device for cell-based assays
US7330315B2 (en) * 2003-05-02 2008-02-12 Reflexite Corporation Light-redirecting optical structures
US20050213482A1 (en) * 2004-03-24 2005-09-29 Imation Corp. Multi-track mastering techniques
JP4393244B2 (ja) * 2004-03-29 2010-01-06 キヤノン株式会社 インプリント装置
US20060073422A1 (en) * 2004-09-28 2006-04-06 Imation Corp. Portable conformable deep ultraviolet master mask
US20060110568A1 (en) * 2004-11-23 2006-05-25 Imation Corp. Multi-layers optical data storage disk masters
US7427466B2 (en) * 2004-11-29 2008-09-23 Imation Corp. Anti-reflection optical data storage disk master
US20060263530A1 (en) * 2005-05-19 2006-11-23 General Electric Company Process for making non-continuous articles with microstructures
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Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107958B (de) * 1958-11-18 1961-05-31 Richard Nicolaus Jun Vorrichtung zum kontinuierlichen Kaschieren von mit Tonrillen versehenen Folien
US3658954A (en) * 1968-07-24 1972-04-25 Mca Technology Inc Duplicating process for video disc records
US3795534A (en) * 1972-04-19 1974-03-05 Rca Corp Manufacture of video discs
US3798134A (en) * 1971-11-15 1974-03-19 Printing Plate Supply Co Method of making an electrotype shell
US3855426A (en) * 1971-03-11 1974-12-17 Philips Corp Video disc recording and optical playback system therefor
US3901994A (en) * 1974-02-04 1975-08-26 Rca Corp Metallized video disc having a dielectric coating thereon
US3945788A (en) * 1971-06-29 1976-03-23 Kabushiki Kaisha Asahi Shimbunsha Apparatus of making reproduction printing plates
US4006271A (en) * 1976-01-28 1977-02-01 Itek Corporation Abrasion resistant coating for polycarbonate substrates
US4017581A (en) * 1975-03-25 1977-04-12 Xerox Corporation Process for preparing relief printing masters and molds
US4049861A (en) * 1975-03-07 1977-09-20 Minnesota Mining And Manufacturing Company Abrasion resistant coatings
US4054635A (en) * 1974-09-26 1977-10-18 American Can Company Copolymer of glycidyl methacrylate and allyl glycidyl ether
BE859711A (fr) * 1976-10-15 1978-04-13 Philips Nv Procede pour la multiplication de porteurs d'information en matiere synthetique et resine de moulage substrat et matrice utilises pour ce procede
US4101513A (en) * 1977-02-02 1978-07-18 Minnesota Mining And Manufacturing Company Catalyst for condensation of hydrolyzable silanes and storage stable compositions thereof
US4112030A (en) * 1975-05-02 1978-09-05 Siemens Aktiengesellschaft Method and system for the production of sheet or platter shaped information carriers
US4124672A (en) * 1973-10-15 1978-11-07 Mca Disco-Vision, Inc. Replication utilizing a casting process
US4126726A (en) * 1976-04-09 1978-11-21 Polygram Gmbh Disc-shaped information carrier having information in the form of a beam-reflecting structure and a process for producing the same
US4175177A (en) * 1978-02-24 1979-11-20 Union Carbide Corporation Crosslinkable copolymer of a lactone and a polyfunctional acrylate
US4199421A (en) * 1977-02-23 1980-04-22 Mitsubishi Rayon Company, Limited Coating composition and a method for producing a synthetic resin molded product having an abrasion resistant surface
EP0015834A1 (fr) * 1979-03-06 1980-09-17 Thomson-Brandt Procédé et appareil de réalisation de disques vidéo

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE639166A (fr) * 1962-11-01
US4225379A (en) * 1976-12-13 1980-09-30 Asahi Glass Company, Limited Method of laminating plastic film and shaped metal substrates
NL7804036A (nl) * 1978-04-17 1979-10-19 Philips Nv Optisch uitleesbare informatieschijf.
US4294782A (en) * 1979-04-10 1981-10-13 Jerome Bauer Method for substantially instantaneous liquid molding of an article
US4304806A (en) * 1980-02-01 1981-12-08 Minnesota Mining And Manufacturing Company Information carrying discs
US4296158A (en) * 1980-02-01 1981-10-20 Minnesota Mining And Manufacturing Company Information carrying discs

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107958B (de) * 1958-11-18 1961-05-31 Richard Nicolaus Jun Vorrichtung zum kontinuierlichen Kaschieren von mit Tonrillen versehenen Folien
US3658954A (en) * 1968-07-24 1972-04-25 Mca Technology Inc Duplicating process for video disc records
US3855426A (en) * 1971-03-11 1974-12-17 Philips Corp Video disc recording and optical playback system therefor
US3945788A (en) * 1971-06-29 1976-03-23 Kabushiki Kaisha Asahi Shimbunsha Apparatus of making reproduction printing plates
US3798134A (en) * 1971-11-15 1974-03-19 Printing Plate Supply Co Method of making an electrotype shell
US3795534A (en) * 1972-04-19 1974-03-05 Rca Corp Manufacture of video discs
US4130620A (en) * 1973-10-15 1978-12-19 Mca Disco-Vision, Inc. Method for making video discs and video disc molds
US4124672A (en) * 1973-10-15 1978-11-07 Mca Disco-Vision, Inc. Replication utilizing a casting process
US3901994A (en) * 1974-02-04 1975-08-26 Rca Corp Metallized video disc having a dielectric coating thereon
US4054635A (en) * 1974-09-26 1977-10-18 American Can Company Copolymer of glycidyl methacrylate and allyl glycidyl ether
US4049861A (en) * 1975-03-07 1977-09-20 Minnesota Mining And Manufacturing Company Abrasion resistant coatings
US4017581A (en) * 1975-03-25 1977-04-12 Xerox Corporation Process for preparing relief printing masters and molds
US4112030A (en) * 1975-05-02 1978-09-05 Siemens Aktiengesellschaft Method and system for the production of sheet or platter shaped information carriers
US4006271A (en) * 1976-01-28 1977-02-01 Itek Corporation Abrasion resistant coating for polycarbonate substrates
US4126726A (en) * 1976-04-09 1978-11-21 Polygram Gmbh Disc-shaped information carrier having information in the form of a beam-reflecting structure and a process for producing the same
BE859711A (fr) * 1976-10-15 1978-04-13 Philips Nv Procede pour la multiplication de porteurs d'information en matiere synthetique et resine de moulage substrat et matrice utilises pour ce procede
US4101513A (en) * 1977-02-02 1978-07-18 Minnesota Mining And Manufacturing Company Catalyst for condensation of hydrolyzable silanes and storage stable compositions thereof
US4199421A (en) * 1977-02-23 1980-04-22 Mitsubishi Rayon Company, Limited Coating composition and a method for producing a synthetic resin molded product having an abrasion resistant surface
US4175177A (en) * 1978-02-24 1979-11-20 Union Carbide Corporation Crosslinkable copolymer of a lactone and a polyfunctional acrylate
EP0015834A1 (fr) * 1979-03-06 1980-09-17 Thomson-Brandt Procédé et appareil de réalisation de disques vidéo

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4569806A (en) * 1983-02-04 1986-02-11 U.S. Philips Corporation Method and device for manufacturing an information carrier of a synthetic material having a laminated structure
US4707431A (en) * 1984-11-01 1987-11-17 Ricoh Co., Ltd. Optical information recording medium
US5149607A (en) * 1985-11-25 1992-09-22 U.S. Philips Corporation Matrix
EP0303086A2 (fr) * 1987-08-11 1989-02-15 Hoechst Aktiengesellschaft Procédé pour fabriquer un substrat pour une couche d'enregistrement magnéto-optique, dispositif d'injection pour fabriquer un substrat ainsi que substrat pour une couche d'enregistrement magnéto-optique
EP0303086A3 (fr) * 1987-08-11 1990-11-22 Hoechst Aktiengesellschaft Procédé pour fabriquer un substrat pour une couche d'enregistrement magnéto-optique, dispositif d'injection pour fabriquer un substrat ainsi que substrat pour une couche d'enregistrement magnéto-optique
EP0409663A2 (fr) * 1989-07-21 1991-01-23 Japan Synthetic Rubber Co., Ltd. Disque optique, méthode de fabrication pour celui-ci et méthode de reproduction
EP0409663A3 (en) * 1989-07-21 1992-08-05 Japan Synthetic Rubber Co., Ltd. Optical disc, preparation thereof and reading method
WO1994014586A1 (fr) * 1992-12-23 1994-07-07 Honeywell Inc. Reproduction de surfaces optiquement plates
US5624611A (en) * 1992-12-23 1997-04-29 Honeywell Inc. Replication of optically flat surfaces
WO1997005608A1 (fr) * 1995-07-27 1997-02-13 Minnesota Mining And Manufacturing Company Procede et appareil permettant la realisation d'un enregistrement optique de l'information
WO1999052104A1 (fr) * 1998-04-06 1999-10-14 Imation Corp. Procede de production de matrices de disques de stockage de donnees multiples a partir d'un original
GB2352056A (en) * 1998-04-06 2001-01-17 Imation Corp Process for making multiple data storage disk stampers from one master

Also Published As

Publication number Publication date
DE3071280D1 (en) 1986-01-16
EP0044345A1 (fr) 1982-01-27
JPS57500017A (fr) 1982-01-07
US4374077A (en) 1983-02-15
CA1152941A (fr) 1983-08-30
EP0044345B1 (fr) 1985-12-04
EP0044345A4 (fr) 1982-01-08

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